package com.sistema.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import com.sistema.vendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter {
	
	private SessionFactory sf;
	

	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	public void doFilter(ServletRequest filter, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		try {
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(filter, response);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
		} catch (Throwable e) {
			
			try {
				if(this.sf.getCurrentSession().getTransaction().isActive()){
					this.sf.getCurrentSession().getTransaction().rollback();
				}
			} catch (Throwable e2) {
				e2.printStackTrace();
			}
			
			throw new ServletException();
			
		}
	}

	public void init(FilterConfig conf) throws ServletException {

		this.sf = HibernateUtil.getSession();
		
	}

}
